40
Try dividing 400 by ten you'll get 40 (or just remove a zero or decimal point to the left when dividing by 10)
9hrs on sleep
6hrs on school
1.6 hrs on job
2.4 hrs on homework
1.92 hrs on meals
4.08hrs on entertainment
Yo sup??
since WY is the perpendicular bisector we can say
3x-5=2x+3
x=8
Hope this helps